Originally Posted by tonycon
I only service the hpr/lpr if I notice a change in consistency or any type if performance drop off.
^This^ Conditions play a big part in how often it should be cleaned. If you play in real sandy or wet conditions you may want to clean it more often. Egos will keep firing no matter how bad you abuse them but they are more consistent when you clean them when needed. I usually go about 10 cases unless you're getting it filthy. One thing I like to do is wipe the bolt and bore after each day of play. Dirt and felt from the process of polishing paintballs have a tendency to build up around the bolt especially if you're using a bolt with Orings like the D.A.R.T.